(31st century BC - 30th century BC - 29th century BC - other centuries)

(4th millennium BC - 3rd millennium BC - 2nd millennium BC)

Events

• 2925 - 2776 BC - First Dynasty wars in Egypt
• 2900 BC - Beginning of the Early Dynastic Period I in Mesopotamia.

Significant persons

Inventions, discoveries, introductions

• The shekal was introduced in Mesopotamia as a monetary and weight unit, see ancient weights and measures.